Shell script to ease running fasta tools.

pkg/front_end/tool/_fasta/abcompile.dart

 // Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import 'dart:async';
 import 'dart:convert';
 import 'dart:math';
 import 'dart:io';
 
 import 'standard_deviation.dart';
@@ skipping 15 matching lines @@
     exit(1);
   }
 
   // The root of this Dart SDK repo "A"
   Uri aRoot = Platform.script.resolve('../../../..');
 
   // The root of the other Dart SDK repo "B"
   Uri bRoot = new Uri.directory(bRootPath);
 
   // Sanity check
-  String relPath = 'pkg/front_end/tool/fasta/compile.dart';
+  String relPath = 'pkg/front_end/tool/_fasta/compile.dart';
   Uri aCompile = aRoot.resolve(relPath);
   if (!new File(aCompile.toFilePath()).existsSync()) {
     print('Failed to find $aCompile');
     exit(1);
   }
   Uri bCompile = bRoot.resolve(relPath);
   if (!new File(bCompile.toFilePath()).existsSync()) {
     print('Failed to find $bCompile');
     exit(1);
   }
@@ skipping 143 matching lines @@
   }, onError: (e) {
     print('Error: $e');
     stdOutSubscription.cancel();
   });
   int code = await process.exitCode;
   if (code != 0) {
     throw 'fail: $code';
   }
   print('');
 }